Duration of drilling with type of burr | Changes in hearing as measured by PTA, DPOAE, TEOAE | n (%) | Mean drill time (min) | p value |
Total | No Yes | 12 (20%) 46 (80%) | 43.64 57.03 | 0.002 Significant |
Diamond | No Yes | 12 (20%) 46 (80%) | 16.04 19.74 | 0.103 Not significant |
Cutting | No Yes | 12 (20%) 46 (80%) | 27.60 37.29 | 0.005 Significant |